90MnCrV8 / AISI: O2
Delivery Method : Normalized, annealed 180-220HB
Uses : High hardening ability is cold work tool steel. It has high dimensional stability in heat treatment. Bolt scrub cheeks, scissors blades, plastic molds, gages, precision measuring tools, cutting and plastic crushing knives are widely chosen. It is known as oil steel.
| Chemical Composition (%) | C | Si | Mn | Cr | V | | % Average | 0,90 | 0,25 | 2,00 | 0,35 | 0,10 | | DIN Analysis | 0,85-0,95 | 0,10-0,40 | 1,80-2,20 | 0,20-0,50 | 0,05-0,20 |
|
| Luminous Conductivity ( W/ m.K ) | 20°C | 350°C | 700°C | | 33,0 | 32,0 | 31,3 |
|
HEAT TREATMENT DATA
| | | Temperature(°C) | Time(Hours) | Cooling Environment
| Softening Annealing
| 680-720 | 2-5* | Baked
| | Tension | 600-650 | 2* | Baked
| Hardening
| 790-820 | - | Oil, 180-220°C | Tempering
| 180-300 | 1 hour for every 20 mm
| Air
|
|
*Time interval varying depending on the section.
